"""Persistence tests for the Camofox browser backend.

Tests that managed persistence uses stable identity while default mode
uses random identity. Camofox automatically maps each userId to a
dedicated persistent Firefox profile on the server side.
"""

import json
from unittest.mock import MagicMock, patch

import pytest

from tools.browser_camofox import (
    _drop_session,
    _get_session,
    _managed_persistence_enabled,
    camofox_close,
    camofox_navigate,
    camofox_soft_cleanup,
    check_camofox_available,
    get_vnc_url,
)
from tools.browser_camofox_state import get_camofox_identity


def _mock_response(status=200, json_data=None):
    resp = MagicMock()
    resp.status_code = status
    resp.json.return_value = json_data or {}
    resp.raise_for_status = MagicMock()
    return resp


def _enable_persistence():
    """Return a patch context that enables managed persistence via config."""
    config = {"browser": {"camofox": {"managed_persistence": True}}}
    return patch("tools.browser_camofox.load_config", return_value=config)


@pytest.fixture(autouse=True)
def _clear_session_state():
    import tools.browser_camofox as mod
    yield
    with mod._sessions_lock:
        mod._sessions.clear()
    mod._vnc_url = None
    mod._vnc_url_checked = False


class TestManagedPersistenceToggle:
    def test_disabled_by_default(self):
        config = {"browser": {"camofox": {"managed_persistence": False}}}
        with patch("tools.browser_camofox.load_config", return_value=config):
            assert _managed_persistence_enabled() is False


    def test_disabled_on_config_load_error(self):
        with patch("tools.browser_camofox.load_config", side_effect=Exception("fail")):
            assert _managed_persistence_enabled() is False


class TestEphemeralMode:
    """Default behavior: random userId, no persistence."""

    def test_session_gets_random_user_id(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")

        session = _get_session("task-1")
        assert session["user_id"].startswith("hermes_")
        assert session["managed"] is False


    def test_session_reuse_within_same_task(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")

        s1 = _get_session("task-1")
        s2 = _get_session("task-1")
        assert s1 is s2


class TestManagedPersistenceMode:
    """With managed_persistence: stable userId derived from Hermes profile."""

    def test_session_gets_stable_user_id(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")

        with _enable_persistence():
            session = _get_session("task-1")
            expected = get_camofox_identity("task-1")
            assert session["user_id"] == expected["user_id"]
            assert session["session_key"] == expected["session_key"]
            assert session["managed"] is True


    def test_navigate_reuses_identity_after_close(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")

        requests_seen = []

        def _capture_post(url, json=None, timeout=None, headers=None):
            requests_seen.append(json)
            return _mock_response(
                json_data={"tabId": f"tab-{len(requests_seen)}", "url": "https://example.com"}
            )

        with (
            _enable_persistence(),
            patch("tools.browser_camofox.requests.post", side_effect=_capture_post),
            patch("tools.browser_camofox.requests.delete", return_value=_mock_response()),
        ):
            first = json.loads(camofox_navigate("https://example.com", task_id="task-1"))
            camofox_close("task-1")
            second = json.loads(camofox_navigate("https://example.com", task_id="task-1"))

        assert first["success"] is True
        assert second["success"] is True
        tab_requests = [req for req in requests_seen if "userId" in req]
        assert len(tab_requests) == 2
        assert tab_requests[0]["userId"] == tab_requests[1]["userId"]


class TestConfiguredCamofoxIdentity:
    """Externally managed Camofox sessions can provide their own identity."""

    def test_env_identity_overrides_default_identity(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")
        monkeypatch.setenv("CAMOFOX_USER_ID", "shared-camofox")
        monkeypatch.setenv("CAMOFOX_SESSION_KEY", "visible-tab")
        monkeypatch.setenv("CAMOFOX_ADOPT_EXISTING_TAB", "true")

        with patch("tools.browser_camofox._get", return_value={"tabs": []}) as mock_get:
            session = _get_session("task-1")

        assert session["user_id"] == "shared-camofox"
        assert session["session_key"] == "visible-tab"
        assert session["managed"] is True
        assert session["adopt_existing_tab"] is True
        mock_get.assert_called_once_with(
            "/tabs",
            params={"userId": "shared-camofox"},
            timeout=5,
        )


    def test_soft_cleanup_preserves_externally_managed_session(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")
        monkeypatch.setenv("CAMOFOX_USER_ID", "shared-camofox")

        with patch("tools.browser_camofox._get", return_value={"tabs": []}):
            _get_session("task-1")
        result = camofox_soft_cleanup("task-1")

        assert result is True
        import tools.browser_camofox as mod
        with mod._sessions_lock:
            assert "task-1" not in mod._sessions


class TestVncUrlDiscovery:
    """VNC URL is derived from the Camofox health endpoint."""

    def test_vnc_url_from_health_port(self, monkeypatch):
        monkeypatch.setenv("CAMOFOX_URL", "http://myhost:9377")
        health_resp = _mock_response(json_data={"ok": True, "vncPort": 6080})
        with patch("tools.browser_camofox.requests.get", return_value=health_resp):
            assert check_camofox_available() is True
        assert get_vnc_url() == "http://myhost:6080"


    def test_navigate_includes_vnc_hint(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")
        import tools.browser_camofox as mod
        mod._vnc_url = "http://localhost:6080"
        mod._vnc_url_checked = True

        with patch("tools.browser_camofox.requests.post", return_value=_mock_response(
            json_data={"tabId": "t1", "url": "https://example.com"}
        )):
            result = json.loads(camofox_navigate("https://example.com", task_id="vnc-test"))

        assert result["vnc_url"] == "http://localhost:6080"
        assert "vnc_hint" in result


class TestCamofoxSoftCleanup:
    """camofox_soft_cleanup drops local state only when managed persistence is on."""

    def test_returns_true_and_drops_session_when_enabled(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")

        with _enable_persistence():
            _get_session("task-1")
            result = camofox_soft_cleanup("task-1")

        assert result is True
        # Session should have been dropped from in-memory store
        import tools.browser_camofox as mod
        with mod._sessions_lock:
            assert "task-1" not in mod._sessions


    def test_does_not_call_server_delete(self, tmp_path, monkeypatch):
        """Soft cleanup must never hit the Camofox /sessions DELETE endpoint."""
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        monkeypatch.setenv("CAMOFOX_URL", "http://localhost:9377")

        with (
            _enable_persistence(),
            patch("tools.browser_camofox.requests.delete") as mock_delete,
        ):
            _get_session("task-1")
            camofox_soft_cleanup("task-1")

        mock_delete.assert_not_called()
